Awash with sun and sea, parks and beaches, history and Karl the Fog (yes, locals have named their most famous weather pattern), this seven-by-seven-mile city flaunts its natural beauty proudly while inviting visitors and locals to dive deeper into its neighborhoods of hilly streets stacked with pastel-hued Victorian houses, Michelin-star and mom-and-pop restaurants, art and music galore, and passionate denizens whose hearts are as big as the Golden Gate Bridge. —Kimberley Lovato